RequestDispatcher in Servlet

RequestDispatcher  is the interface which dispatches the request from one resource to another resource. It may be Html, Servlet or jsp.

This interface can also be used to include the content of another resource also.

There are two methods in this interface:​

       1.public void forward(ServletRequest request,ServletResponse response)throws    ServletException,java.io.IOException

           Forwards a request from a servlet to another resource (Servlet, Jsp  or Html).

Example: 
             RequestDispatcher rd=request.getRequestDispatcher("servlet2");  
             rd.forward(request, response);

        2.public void include(ServletRequest request,ServletResponse response)throws                ServletException,java.io.IOException

         Includes the content of a resource (Servlet, Jsp or Html ).

Example: 
             RequestDispatcher rd=request.getRequestDispatcher("/index.html");  
             rd.include(request, response);